The United States is currently involved in seven wars: Afghanistan, Iraq, Syria, Lebanon, Libya, Yemen, and Somalia. The United States has also been involved in peacekeeping operations in Haiti, Bosnia, Kosovo, and Liberia. Additionally, the United States has participated in multilateral peacekeeping operations in the Andean region, the Middle East, and Africa. The United States has also been involved in a total of 64 military operations since 2001. The United States has been involved in more military operations than any other country in the world.

The United States became involved in World War I on April 6, 1917, when the United States declared war on Germany. The United States was one of the Allies and was eventually victorious. The United States became involved in World War II on December 8, 1941, when Japan attacked Pearl Harbor. The United States was one of the Allies and was eventually victorious. The United States became involved in the Korean War on June 25, 1950, when North Korea invaded South Korea. The United States was one of the Allies and was eventually victorious. The United States became involved in the Vietnam War on April 30, 1965, when North Vietnam attacked South Vietnam. The United States was one of the Allies and was eventually defeated. The United States became involved in the Gulf War on August 2, 1990, when Iraq invaded Kuwait. The United States was one of the Allies and was eventually victorious. The United States became involved in the War on Terror on September 11, 2001, when terrorists attacked the United States. The United States was one of the Allies and was eventually victorious.

The United States has also been involved in numerous other armed conflicts in places like Pakistan, Somalia, and Yemen. The United States has also been involved in peacekeeping operations around the world. According to the Congressional Research Service, the United States has been involved in armed conflicts or peacekeeping operations for more than 60 years.